Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the electrical circuit that controls the shift motor. It's like when a light switch in your house isn't working because there's too much electricity going through it.
The P28E1 code indicates that the voltage in the shift motor's U-V-W circuit is higher than expected, which can affect the motor's operation.
The shift motor is responsible for changing gears in a vehicle's transmission. The U-V-W circuit refers to the three-phase electrical circuit that powers the motor. A 'circuit high' condition means the voltage is above the normal range, which could be due to a short circuit, faulty wiring, or a malfunctioning shift motor.
• Transmission not shifting properly
• Check Engine Light illuminated
• Unusual noises from the transmission
• Short circuit in the wiring
• Faulty shift motor
• Malfunctioning transmission control module
Shift Motor: A component that helps change gears in a vehicle's transmission.
Circuit High: A condition where the voltage in an electrical circuit is higher than expected.
• Check for any blown fuses related to the transmission system.
• Inspect the wiring and connectors for damage or corrosion.
• Test the shift motor for proper operation and voltage levels.
• Replace damaged wiring or connectors.
• Replace the shift motor if it is faulty.
• Reprogram or replace the transmission control module if necessary.
• Multimeter
• OBD-II scanner
• Screwdriver set
$200 - $800
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect and maintain the transmission system.
• Avoid overloading the vehicle.
• Ensure timely servicing of the vehicle's electrical systems.
Transmission Control Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
Transmission components may be covered under the powertrain warranty. Check with your vehicle manufacturer.
This code has been associated with vehicles that have experienced electrical issues in the transmission system, particularly in models with electronic shift control.
High – This issue can lead to transmission failure if not addressed promptly.
Driving with a malfunctioning transmission can be dangerous. Ensure repairs are conducted by a qualified professional.
• Vehicle at operating temperature
• Transmission in neutral or park
The shift motor is typically located on the transmission housing.
Q: Can I drive with a P28E1 code?
A: It's not recommended to drive with this code active as it can lead to transmission damage.
Q: How can I reset the P28E1 code?
A: You can reset the code using an OBD-II scanner, but it's important to fix the underlying issue first.
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